Joseph s



(No Model.)

J. S. BEEMAN.

- SUPPORT FOR FILAMENTS OF INGANDBSCENT LAMPS. NO. 291,464. Patented Jan. 1., 1884;

Wifnekfifla I Invento W W I ing broken or injured by sudden shocks.

UNITED STATES PATENT OFFICE.

JOSEPH S. BEEMAN, OF LONDON, ENGLAND.

SUPPORT FOR FIEAMENTS OF INCANDESCENT LAMPS.

SPECIFICATION forming part of Letters Patent No. 291,464, dated January 1, 1884 Application filed Apii] 23. 1883. (X0 model.) Patented in England July 11, 1882. No. 3,279, and in France January 9, 1883.

To all whom it may concern.-

Be it known that I, J osEPH SAMUEL BEEMAN, of 67 Strand, London, England,have invented a new and useful Improvement in Electric Lamps, (for which I have obtained patent in Great Britain, dated July 11, 1882, No. 3,279, and in France January 9, 1883,) of which the following is a specification.

My invention has for its object to prevent or arrest injurious movement or vibrations of the carbon filament or filaments of incandescent electric lamps, and to prevent the filament be- In order to effect these objects, a projection or pendent piece is fitted to or formed on the in terior of the bulb or globe of the lamp, so as to embrace and support, but at the same time be out of contact with, the filament or filaments, when in its or their normal position.

The annexed drawings illustrate a method of carrying out my invention, Figures 1 and 2 being vertical sections, at right angles to each other, of an incandescent electric lamp provided with a supporting device according to my invention.

A is the bulb of the lamp; B, the carbon filament; O, the conducting-wires, and D the jecting portion d of the supporting device D is forked, or is in theform of a saddle or crutch, as shown in Fig. 2; or it may be of any other suitable shape, to embrace both sides of the upper or curved portion of the filamentor filaments, which filament or filaments should be arranged between the limbs or prongs of the supporting device, but without being in contact therewith when the said filament or filaments is or are in the normal position. Should the lamp, however, besnbjected to a sudden shock or vibration, the filament or filaments will be brought into contact with one or other of the prongs or depending pieces of the supporting device, which would thus prevent the filament or filaments from being broken or injured by. the vibrations of the lamps.

I claim as my invention In incandescent lamps, the eombination,with the globe or bulb and theincandesoent filament, of a projection or pendent piece fitted to or formed on the interior of the globe in a position to embrace and support the filament when the latter is inserted in place in the globe, as hereinbefore set forth.

In testimony whereof I have signed this specification in the presence of two subscrib- J. S. BEEMAN.

ing witnesses;

Witnesses:

H. J. HADDAN, A. E. MELHUISH. 

